document.addEventListener('DOMContentLoaded', function() {
    if (typeof tdScrollToClass === 'undefined') return;

    tdScrollToClass.td_helper_scroll_to_class = function(a, d, b, c, e, h) {
        if (d.length) {
            d = d.offset();
            var dist = Math.abs(b.top - d.top);

            var dur = Math.round(dist * 0.3);   // was 0.6
            dur = dur < 40 ? 40 : dur;           // was 80 — near-instant floor
            dur = dur > 500 ? 500 : dur;         // was 700 — lower ceiling too

            tdUtil.scrollToPosition(d.top + c, dur);
            a = a.parent().parent('li.menu-item');
            if (a.length) {
                a.siblings('.current-menu-item').removeClass('current-menu-item');
                a.addClass('current-menu-item');
            }
            jQuery('body').removeClass('td-menu-mob-open-menu');
        } else if (typeof e !== 'undefined' && e !== '') {
            td_set_cookies_life(['td-cookie-scroll-to-class', h, 864E5]);
            td_set_cookies_life(['td-cookie-scroll-offset', c, 864E5]);
            jQuery('body').removeClass('td-menu-mob-open-menu');
            window.location = e;
        }
    };
});